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Is the python dropbox api thread safe?
I'm using different dropbox contexts created with dropbox.Dropbox(...). In my application, I have two or more contexts sharing the same target account (and Console Apps) at a time. Example: contexts ...
Turns out that this answer is not very easy to answer, as even the requests module don't assure wether their api is thread safe.
Going as far to search on stackoverflow and reading the requests module source code , I found out that:
1. Sharing a single session instance on multiple threads is not thread-safe. However, apparently using one instance per thread is. So, in order to use this api correctly, we'd theoretically need to create different dropbox sessions per thread, in order to run code with thread safety.
2. Most of the thread-safety of the requests.sessions module depends on wether the urllib3 module is thread-safe. From current records, it turns out that the v2.0 is thread-safe, as seen on this GitHub thread, and on the urllib official docs .
Though imho its best to stick with option #1 as it's more reliable.
Hi Carl HR,
I think, you have misinterpreted the topics you have read. The thread safety there is evaluated in regards of ability to transfer session state between threads (something not guaranteed while using default Python requests library). When everything (Dropbox API call needs) is set explicitly, you don't need to care about any loss of state (no state - there is nothing to loss). The underlying library (urllib3, by the way no curl or some fork of libcurl otherwise available too), that carry the actual request, is thread safe. 😉 You have everything you need with one exception - don't share Dropbox client object between threads. The behavior on refresh would be undefined (something easy correctable with redefining 'check_and_refresh_access_token' - enclose the body in mutex).
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